Stefan Mileschin

We've all heard of wireless charging before, but most solutions still require your phone to come in touch with a base station. Well, Cota is a technology that aims to power your mobile device completely wirelessly -- without any physical contact at all. Hatem Zeine, a physicist and CEO of Ossia Inc, demonstrated the technology on stage at TechCrunch Disrupt when he successfully charged his iPhone when plugged with a Cota prototype, seen above, while holding it several feet away from a charging station.

It all seems like voodoo, but the secret lies in sending a magnetic charge over the same 2.4GHz spectrum that WiFi and Bluetooth already use. If you're concerned about safety, Zeine assures us that only one watt of power is transmitted -- that's a third of what cell phones already transmit. Line of sight isn't required, and Zeine claims that one station can power multiple devices at once. Just like a WiFi hotspot, you can set it so that it only works with certain devices or simply open it up so that power is available to all Cota-enabled handsets within range, which is around 30 feet.

http://www.engadget.com/2013/09/09/c...&ncid=rss_semi